Răspuns:
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Explicație pas cu pas:
Ex 62.
a)a:5+238=251
a:5=251-238
a:5=13
a=13×5
a=65
v:65:5+238=13+238=251
a:3+65=343
a:3=343-65
a:3=278
a=278×3
a=834
v:834:3+65=278+65=343
b)m:7-34=59
m:7=59+34
m:7=93
m=93×7
m=651
v:651:7-34=93-34=59
m:6-53=86
m:6=86+53
m:6=139
m=139×6
m=834
v:834:6-53=139-53=86
c)x:2-104=197
x:2=197+104
x:2=301
x=301×2
x=602
v:602:2-104=301-104=197
x:4-39=163
x:4=163+39
x:4=202
x=202×4
x=808
v:808:4-39=202-39=163
d)z:5+159=273
z:5=273-159
z:5=114
z=114×5
z=570
v:570:5+159=114+159=273
z:8+87=145
z:8=145-87
z:8=58
z=58×8
z=464
v:464:8+87=58+87=145
